May 2, 2007, 5:54 AM
Post #5 of 9
I doubt that Gazanias are used along the freeways. Gazanias don't spread like the Ice Plants do. A clump of Gazania will get larger, but it won't spread like from runners or anything. Each plant has to be started from a separate, wind blown, seed. That's why you can find them in places where you didn't plant them. Here in Louisiana, it's just a little too cold for the seed to survive from year to year, but I can easily see where they could in Mexico.
I've only been to California a couple of times, but I did notice all the "Freeway Daisies". The ones I saw were any of several species and colors of succulent plants (Ice Plants) in the family Araceae. Most in the genus Delosperma. Now these DO spread. Individual plants can spread to a mat several feet wide. We grow a couple of species that survive our mild winters here, a purple and a yellow.
You know, something I just thought of. In Texas and other states, they plant wildflower seed mixes up and down the freeways. The individual plants don't spread, but they do re-seed and spread to other areas. The mix they usually use in Texas contains Bluebonnets, Indian Paintbrush, Coreopsis, and Gaillardia or Indian Blanket.
Hope this helps,
(This post was edited by Ponderer on May 2, 2007, 5:57 AM)